Episode 50 of 82 is Locke centric and a return to more of a Season 2 style with nice writing that wraps the present on-island happenings with the off-island flashbacks. Plus we get zero coverage of the weirdness that is occurring on the ?Other? side of the island with Jack, Kate and Sawyer.
When Locke wakes up in the jungle after the hatch implosion he now doesn’t know what to do, when he found the hatch initially he felt it was his destiny to save the world by pushing the button every 108 minutes. Then anther hatch was uncovered and it seemed to reveal that pushing the button was all a psychological experiment and really meant nothing. But when he devised a way to prevent the button from being pushed, something very powerful event did occur and the hatch was destroyed. For guidance he builds a sweat lodge where he is visited by the dead Boone and is pushed around the Sindey, Australia airport in his old wheelchair until he figures out he has to clean up his mess, i.e. rescue Mr. Eko who was also inside the hatch and consequently tossed about the island somewhere and has been captured by another of the island’s polar bears.